#OnThisDay in 1968 #ChemicalKing debuted in @dc.com #AdventureComics #371 a year after #referencedAsHonoredDead in #1stAdultLegionStory #mutant #CondoArlik has #PowerToAlterChemicalReactions on #LegionAcademy mission toSpyOn #TheLegionOfSuperVillains #winsLegionMembership downlo dated #InvisibleKid